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handlers.go
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handlers.go
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package proxy
import (
"log"
"regexp"
"strings"
"github.com/feeleep75/open-ethereum-pool/rpc"
"github.com/feeleep75/open-ethereum-pool/util"
)
// Allow only lowercase hexadecimal with 0x prefix
var noncePattern = regexp.MustCompile("^0x[0-9a-f]{16}$")
var hashPattern = regexp.MustCompile("^0x[0-9a-f]{64}$")
var workerPattern = regexp.MustCompile("^[0-9a-zA-Z-_]{1,8}$")
// Stratum
func (s *ProxyServer) handleLoginRPC(cs *Session, params []string, id string) (bool, *ErrorReply) {
if len(params) == 0 {
return false, &ErrorReply{Code: -1, Message: "Invalid params"}
}
login := strings.ToLower(params[0])
if !util.IsValidHexAddress(login) {
return false, &ErrorReply{Code: -1, Message: "Invalid login"}
}
if !s.policy.ApplyLoginPolicy(login, cs.ip) {
return false, &ErrorReply{Code: -1, Message: "You are blacklisted"}
}
cs.login = login
s.registerSession(cs)
log.Printf("Stratum miner connected %v@%v", login, cs.ip)
return true, nil
}
func (s *ProxyServer) handleGetWorkRPC(cs *Session) ([]string, *ErrorReply) {
t := s.currentBlockTemplate()
if t == nil || len(t.Header) == 0 || s.isSick() {
return nil, &ErrorReply{Code: 0, Message: "Work not ready"}
}
return []string{t.Header, t.Seed, s.diff}, nil
}
// Stratum
func (s *ProxyServer) handleTCPSubmitRPC(cs *Session, id string, params []string) (bool, *ErrorReply) {
s.sessionsMu.RLock()
_, ok := s.sessions[cs]
s.sessionsMu.RUnlock()
if !ok {
return false, &ErrorReply{Code: 25, Message: "Not subscribed"}
}
return s.handleSubmitRPC(cs, cs.login, id, params)
}
func (s *ProxyServer) handleSubmitRPC(cs *Session, login, id string, params []string) (bool, *ErrorReply) {
if !workerPattern.MatchString(id) {
id = "0"
}
if len(params) != 3 {
s.policy.ApplyMalformedPolicy(cs.ip)
log.Printf("Malformed params from %s@%s %v", login, cs.ip, params)
return false, &ErrorReply{Code: -1, Message: "Invalid params"}
}
if !noncePattern.MatchString(params[0]) || !hashPattern.MatchString(params[1]) || !hashPattern.MatchString(params[2]) {
s.policy.ApplyMalformedPolicy(cs.ip)
log.Printf("Malformed PoW result from %s@%s %v", login, cs.ip, params)
return false, &ErrorReply{Code: -1, Message: "Malformed PoW result"}
}
t := s.currentBlockTemplate()
exist, validShare := s.processShare(login, id, cs.ip, t, params)
ok := s.policy.ApplySharePolicy(cs.ip, !exist && validShare)
if exist {
log.Printf("Duplicate share from %s@%s %v", login, cs.ip, params)
return false, &ErrorReply{Code: 22, Message: "Duplicate share"}
}
if !validShare {
log.Printf("Invalid share from %s@%s", login, cs.ip)
// Bad shares limit reached, return error and close
if !ok {
return false, &ErrorReply{Code: 23, Message: "Invalid share"}
}
return false, nil
}
log.Printf("Valid share from %s@%s", login, cs.ip)
if !ok {
return true, &ErrorReply{Code: -1, Message: "High rate of invalid shares"}
}
return true, nil
}
func (s *ProxyServer) handleGetBlockByNumberRPC() *rpc.GetBlockReplyPart {
t := s.currentBlockTemplate()
var reply *rpc.GetBlockReplyPart
if t != nil {
reply = t.GetPendingBlockCache
}
return reply
}
func (s *ProxyServer) handleUnknownRPC(cs *Session, m string) *ErrorReply {
log.Printf("Unknown request method %s from %s", m, cs.ip)
s.policy.ApplyMalformedPolicy(cs.ip)
return &ErrorReply{Code: -3, Message: "Method not found"}
}